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<p class=MsoNormal align=center style='margin-bottom:12.0pt;text-align:center;
line-height:normal;background:#FAFAFA'><span class=SpellE><b><span
style='font-size:13.5pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
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class=SpellE>Dây</span> <span class=SpellE>v&#7899;i</span> <span class=SpellE>Móc</span>
<span class=SpellE>Khóa</span></span></b><span style='font-size:10.0pt;
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<p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;line-height:
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<p class=MsoNormal style='margin-bottom:12.0pt;line-height:normal;background:
#FAFAFA'><span class=SpellE><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'>Th&#432;&#7901;ng</span></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#333333'> <span class=SpellE>các</span> <span
class=SpellE>móc</span> <span class=SpellE>khóa</span> <span class=SpellE>&#273;&#432;&#7907;c</span>
<span class=SpellE>s&#7917;</span> <span class=SpellE>d&#7909;ng</span> <span
class=SpellE>&#273;&#7875;</span> <span class=SpellE>t&#259;ng</span> <span
class=SpellE>tính</span> <span class=SpellE>linh</span> <span class=SpellE>&#273;&#7897;ng</span>.
<span class=SpellE>T&#7915;</span> <span class=SpellE>máy</span> <span
class=SpellE>câu</span>, <span class=SpellE>dây</span> <span class=SpellE>&#273;&#432;&#7907;c</span>
<span class=SpellE>lôi</span> <span class=SpellE>ra</span> <span class=SpellE>và</span>
<span class=SpellE>bu&#7897;c</span> <span class=SpellE>vào</span> <span
class=SpellE>móc</span> <span class=SpellE>khóa</span>. <span class=SpellE>T&#7915;</span>
<span class=SpellE>&#273;ó</span> <span class=SpellE>móc</span> <span
class=SpellE>khóa</span> <span class=SpellE>có</span> <span class=SpellE>th&#7875;</span>
<span class=SpellE>dùng</span> <span class=SpellE>&#273;&#7875;</span> <span
class=SpellE>bu&#7897;c</span> <span class=SpellE>vào</span> <span
class=SpellE>&#273;o&#7841;n</span> <span class=SpellE>dây</span> <span
class=SpellE>&#273;&#7847;u</span> <span class=SpellE>cu&#7889;i</span>, <span
class=SpellE>v&#7899;i</span> '<span class=SpellE>th&#7867;o</span>', <span
class=SpellE>v&#7899;i</span> <span class=SpellE>chì</span> <span class=SpellE>n&#7863;ng</span>
<span class=SpellE>ho&#7863;c</span> <span class=SpellE>v&#7899;i</span> <span
class=SpellE>l&#432;&#7905;i</span> <span class=SpellE>câu</span>. <span
class=SpellE>Chúng</span> <span class=SpellE>tôi</span> <span class=SpellE>xin</span>
<span class=SpellE>trình</span> <span class=SpellE>bày</span> &#7903; <span
class=SpellE>&#273;ây</span> <span class=SpellE>các</span> <span class=SpellE>ph&#432;&#417;ng</span>
<span class=SpellE>pháp</span> <span class=SpellE>&#273;&#432;&#7907;c</span> <span
class=SpellE>coi</span> <span class=SpellE>là</span> <span class=SpellE>thông</span>
<span class=SpellE>d&#7909;ng</span> <span class=SpellE>nh&#7845;t</span>. <span
class=SpellE>Các</span> <span class=SpellE>ph&#432;&#417;ng</span> <span
class=SpellE>pháp</span> <span class=SpellE>bu&#7897;c</span> <span
class=SpellE>móc</span> <span class=SpellE>không</span> <span class=SpellE>nh&#7845;t</span>
<span class=SpellE>thi&#7871;t</span> <span class=SpellE>gi&#7889;ng</span> <span
class=SpellE>v&#7899;i</span> <span class=SpellE>các</span> <span class=SpellE>nút</span>
<span class=SpellE>bu&#7897;c</span> <span class=SpellE>khác</span>, <span
class=SpellE>m&#7863;c</span> <span class=SpellE>dù</span> <span class=SpellE>có</span>
<span class=SpellE>th&#7875;</span> <span class=SpellE>trùng</span> <span
class=SpellE>tên</span>. <span class=SpellE>Không</span> <span class=SpellE>nên</span>
<span class=SpellE>ph&#432;&#417;ng</span> <span class=SpellE>pháp</span> <span
class=SpellE>dùng</span> <span class=SpellE>bu&#7897;c</span> <span
class=SpellE>móc</span> <span class=SpellE>cho</span> <span class=SpellE>vi&#7879;c</span>
<span class=SpellE>bu&#7897;c</span> <span class=SpellE>dây</span> <span
class=SpellE>tr&#7921;c</span> <span class=SpellE>ti&#7871;p</span> <span
class=SpellE>vào</span> <span class=SpellE>l&#432;&#7905;i</span> <span
class=SpellE>câu</span>.<o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]></span><span style='font-size:12.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman"'><o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:12.0pt;line-height:normal;background:
#FAFAFA'><span class=SpellE><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#00309C'>Bu&#7897;c</span></b></span><b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#00309C'> Neo (Clinch Knot)</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#333333'><o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]></span><span style='font-size:12.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman"'><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l2 level1 lfo1;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><!--[if gte vml 1]><v:shapetype id="_x0000_t75"
 coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe"
 filled="f" stroked="f">
 <v:stroke joinstyle="miter"/>
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  <v:f eqn="if lineDrawn pixelLineWidth 0"/>
  <v:f eqn="sum @0 1 0"/>
  <v:f eqn="sum 0 0 @1"/>
  <v:f eqn="prod @2 1 2"/>
  <v:f eqn="prod @3 21600 pixelWidth"/>
  <v:f eqn="prod @3 21600 pixelHeight"/>
  <v:f eqn="sum @0 0 1"/>
  <v:f eqn="prod @6 1 2"/>
  <v:f eqn="prod @7 21600 pixelWidth"/>
  <v:f eqn="sum @8 21600 0"/>
  <v:f eqn="prod @7 21600 pixelHeight"/>
  <v:f eqn="sum @10 21600 0"/>
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 <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"/>
 <o:lock v:ext="edit" aspectratio="t"/>
</v:shapetype><v:shape id="Picture_x0020_3" o:spid="_x0000_s1028" type="#_x0000_t75"
 alt="http://www.4so9.com/files/knots/noi-moc/buoc-neo.gif" style='position:absolute;
 left:0;text-align:left;margin-left:128.8pt;margin-top:0;width:180pt;height:135pt;
 z-index:251659264;visibility:visible;mso-wrap-style:square;
 mso-width-percent:0;mso-height-percent:0;mso-wrap-distance-left:2.25pt;
 mso-wrap-distance-top:2.25pt;mso-wrap-distance-right:2.25pt;
 mso-wrap-distance-bottom:2.25pt;mso-position-horizontal:right;
 mso-position-horizontal-relative:text;mso-position-vertical:absolute;
 mso-position-vertical-relative:line;mso-width-percent:0;mso-height-percent:0;
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 <v:imagedata src="./article/Bai2_files/image001.jpg" o:title="buoc-neo"/>
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</v:shape><![endif]--><![if !vml]><img width=240 height=180
src="./article/Bai2_files/image002.jpg" align=right hspace=3 vspace=3
alt="http://www.4so9.com/files/knots/noi-moc/buoc-neo.gif" v:shapes="Picture_x0020_3"><![endif]><span
class=SpellE><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'>X&#7887;</span></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#333333'> <span class=SpellE>&#273;&#7847;u</span> <span
class=SpellE>dây</span> <span class=SpellE>xuyên</span> qua <span class=SpellE>l&#7893;</span>
<span class=SpellE>móc</span>. <span class=SpellE>G&#7853;p</span> <span
class=SpellE>l&#7841;i</span> <span class=SpellE>và</span> <span class=SpellE>xo&#7855;n</span>
<span class=SpellE>&#273;&#7847;u</span> <span class=SpellE>&#273;o&#7841;n</span>
<span class=SpellE>dây</span> <span class=SpellE>xung</span> <span
class=SpellE>quanh</span> <span class=SpellE>&#273;&#7847;u</span> <span
class=SpellE><span class=GramE>kia</span></span> <span class=SpellE>c&#7911;a</span>
<span class=SpellE>chính</span> <span class=SpellE>nó</span> <span
class=SpellE>kho&#7843;ng</span> 5-8 <span class=SpellE>vòng</span>. <span
class=SpellE>Dùng</span> <span class=SpellE>ngón</span> <span class=SpellE><span
class=GramE>tay</span></span> <span class=SpellE>gi&#7919;</span> <span
class=SpellE>l&#7841;i</span> <span class=SpellE>l&#7895;</span> <span
class=SpellE>g&#7847;n</span> <span class=SpellE>móc</span> <span class=SpellE>nh&#7845;t</span>
<span class=SpellE>và</span> <span class=SpellE>x&#7887;</span> <span
class=SpellE>&#273;&#7847;u</span> <span class=SpellE>dây</span> qua <span
class=SpellE>l&#7893;</span> <span class=SpellE>ng&#7887;</span> <span
class=SpellE>này</span>.<o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l2 level1 lfo1;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span class=SpellE><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'>Si&#7871;t</span></span><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'> <span class=SpellE>ch&#7863;t</span> <span class=SpellE>&#273;&#7847;u</span>
<span class=SpellE>dây</span> <span class=SpellE>và</span> <span class=SpellE>kéo</span>
<span class=SpellE>nút</span> <span class=SpellE>l&#7841;i</span> <span
class=SpellE>g&#7847;n</span> <span class=SpellE>móc</span>. <span
class=SpellE>C&#7849;n</span> <span class=SpellE>th&#7853;n</span> <span
class=SpellE>không</span> <span class=SpellE>&#273;&#7875;</span> <span
class=SpellE>m&#7889;i</span> <span class=SpellE>dây</span> <span class=SpellE>tu&#7897;t</span>
<span class=SpellE>ra.</span><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l2 level1 lfo1;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span class=SpellE><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'>Ki&#7875;u</span></span><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'> <span class=SpellE>bu&#7897;c</span> <span class=SpellE>này</span>
<span class=SpellE>hoàn</span> <span class=SpellE>toàn</span> <span
class=SpellE>có</span> <span class=SpellE>th&#7875;</span>&nbsp;<span
class=GramE><b>TU&#7896;T</b>&nbsp;!</span> <span class=SpellE>N&#7871;u</span>
<span class=SpellE>b&#7841;n</span> <span class=SpellE>không</span> <span
class=SpellE>mu&#7889;n</span> <span class=SpellE>m&#7845;t</span> <span
class=SpellE>c&#7843;</span> <span class=SpellE>chì</span> <span class=SpellE>l&#7851;n</span>
<span class=SpellE>chài</span> (<span class=SpellE>và</span> <span
class=SpellE><span class=GramE>cá</span></span><span class=GramE> !</span>), <span
class=SpellE>hãy</span> <span class=SpellE>t&#7841;o</span> <span class=SpellE>m&#7897;t</span>
<span class=SpellE>nút</span> &#7903; <span class=SpellE>&#273;&#7847;u</span> <span
class=SpellE>dây</span> <span class=SpellE>&#273;&#7875;</span> <span
class=SpellE>gi&#7919;</span> <span class=SpellE>nó</span> <span class=SpellE>l&#7841;i</span>
<span class=SpellE>không</span> <span class=SpellE>cho</span> <span
class=SpellE>tu&#7897;t</span> qua.<o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]></span><span style='font-size:12.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman"'><o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:12.0pt;line-height:normal;background:
#FAFAFA'><span class=SpellE><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#00309C'>Bu&#7897;c</span></b></span><b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#00309C'> <span class=SpellE>Th&#7855;t</span> <span
class=SpellE>C&#7893;</span> (Hangman-Knot)</span></b><span style='font-size:
10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'><o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]></span><span style='font-size:12.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman"'><o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:12.0pt;line-height:14.65pt;background:
#FAFAFA'><span class=SpellE><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'>Bu&#7897;c</span></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#333333'> <span class=SpellE>Th&#7855;t</span> <span
class=SpellE>C&#7893;</span> <span class=SpellE>&#273;&#432;&#7907;c</span> <span
class=SpellE>coi</span> <span class=SpellE>là</span> <span class=SpellE>tuy&#7879;t</span>
<span class=SpellE>h&#7843;o</span> <span class=SpellE>nh&#7845;t</span> <span
class=SpellE>và</span> <span class=SpellE>&#273;&#432;&#7907;c</span> <span
class=SpellE>dùng</span> <span class=SpellE>r&#7845;t</span> <span
class=SpellE>nhi&#7873;u</span>. <span class=SpellE>Ðôi</span> <span
class=SpellE>khi</span> <span class=SpellE>nó</span> <span class=SpellE>&#273;&#432;&#7907;c</span>
<span class=SpellE>dùng</span> <span class=SpellE>c&#7843;</span> <span
class=SpellE>trong</span> <span class=SpellE>viêc</span> <span class=SpellE>bu&#7897;c</span>
<span class=SpellE>vào</span> ... <span class=SpellE>mang</span> <span
class=SpellE>cá</span> <span class=SpellE>trong</span> <span class=SpellE>tr&#432;&#7901;ng</span>
<span class=SpellE>h&#7907;p</span> <span class=SpellE>quên</span> hay <span
class=SpellE>không</span> <span class=SpellE>mang</span> <span class=SpellE>gi&#7887;</span>
<span class=SpellE>l&#432;&#7899;i</span> <span class=SpellE>&#273;i</span>.<o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l1 level1 lfo2;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><!--[if gte vml 1]><v:shape id="Picture_x0020_2"
 o:spid="_x0000_s1027" type="#_x0000_t75" alt="http://www.4so9.com/files/knots/noi-moc/buoc-that-co.gif"
 style='position:absolute;left:0;text-align:left;margin-left:128.8pt;
 margin-top:0;width:180pt;height:174pt;z-index:251660288;visibility:visible;
 mso-wrap-style:square;mso-width-percent:0;mso-height-percent:0;
 mso-wrap-distance-left:2.25pt;mso-wrap-distance-top:2.25pt;
 mso-wrap-distance-right:2.25pt;mso-wrap-distance-bottom:2.25pt;
 mso-position-horizontal:right;mso-position-horizontal-relative:text;
 mso-position-vertical:absolute;mso-position-vertical-relative:line;
 mso-width-percent:0;mso-height-percent:0;mso-width-relative:page;
 mso-height-relative:page' o:allowoverlap="f">
 <v:imagedata src="./article/Bai2_files/image003.jpg" o:title="buoc-that-co"/>
 <w:wrap type="square" anchory="line"/>
</v:shape><![endif]--><![if !vml]><img width=240 height=232
src="./article/Bai2_files/image004.jpg" align=right hspace=3 vspace=3
alt="http://www.4so9.com/files/knots/noi-moc/buoc-that-co.gif" v:shapes="Picture_x0020_2"><![endif]><span
class=SpellE><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'>X&#7887;</span></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#333333'> qua <span class=SpellE>lõ</span> <span
class=SpellE>móc</span> <span class=SpellE>kho&#7843;ng</span> 15cm <span
class=SpellE>&#273;&#7847;u</span> <span class=SpellE>dây</span> <span
class=SpellE>và</span> <span class=SpellE>vòng</span> <span class=SpellE>&#273;&#7847;u</span>
<span class=SpellE>dây</span> <span class=SpellE>tr&#7903;</span> <span
class=SpellE>l&#7841;i</span> <span class=SpellE>chi&#7873;u</span> <span
class=SpellE>c&#7911;a</span> <span class=SpellE>chính</span> <span
class=SpellE>nó</span>, <span class=SpellE>t&#7841;o</span> <span class=SpellE>nên</span>
<span class=SpellE>m&#7897;t</span> <span class=SpellE>b&#7909;ng</span> <span
class=SpellE>dây</span><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l1 level1 lfo2;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span class=SpellE><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'>Xo&#7855;n</span></span><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'> <span class=SpellE>vòng</span> qua <span class=SpellE>b&#7909;ng</span>
<span class=SpellE>dây</span> <span class=SpellE>này</span> <span class=SpellE>kho&#7843;ng</span>
5-8 <span class=SpellE>vòng</span> <span class=SpellE>xo&#7855;n</span><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l1 level1 lfo2;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span class=SpellE><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'>Xi&#7871;t</span></span><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'> <span class=SpellE>l&#7841;i</span> <span class=SpellE>t&#7841;o</span>
<span class=SpellE>nên</span> <span class=SpellE>m&#7897;t</span> <span
class=SpellE>nút</span> <span class=SpellE>bu&#7897;c</span><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l1 level1 lfo2;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span class=SpellE><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'>Kéo</span></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'> <span class=SpellE>nút</span>
<span class=SpellE>&#273;ã</span> <span class=SpellE>xi&#7871;t</span> <span
class=SpellE>l&#7841;i</span> <span class=SpellE>g&#7847;n</span> <span
class=SpellE>v&#7899;i</span> <span class=SpellE>móc</span> <span class=SpellE>khóa</span><o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]></span><span style='font-size:12.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman"'><o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:12.0pt;line-height:normal;background:
#FAFAFA'><span class=SpellE><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#00309C'>Bu&#7897;c</span></b></span><b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#00309C'> <span class=SpellE>Dây</span> <span
class=SpellE>Ðôi</span> (Offshore Swivel Knot)</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#333333'><o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:0in;margin-bottom:.0001pt;line-height:
normal'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]></span><span style='font-size:12.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman"'><o:p></o:p></span></p>

<p class=MsoNormal style='margin-bottom:12.0pt;line-height:14.65pt;background:
#FAFAFA'><span class=SpellE><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'>Cách</span></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#333333'> <span class=SpellE>bu&#7897;c</span> <span
class=SpellE>dây</span> <span class=SpellE>này</span> <span class=SpellE>dùng</span>
<span class=SpellE>trong</span> <span class=SpellE>tr&#432;&#7901;ng</span> <span
class=SpellE>h&#7907;p</span> <span class=SpellE>bu&#7897;c</span> <span
class=SpellE>dây</span> <span class=SpellE>&#273;ôi</span> <span class=SpellE>vào</span>
<span class=SpellE>móc</span> <span class=SpellE>và</span> <span class=SpellE>th&#432;&#7901;ng</span>
<span class=SpellE>dùng</span> <span class=SpellE>ngoài</span> <span
class=SpellE>bi&#7875;n</span> (<span class=SpellE>g&#7845;p</span> <span
class=SpellE>&#273;&#7897;i</span> <span class=SpellE>&#273;&#7897;</span> <span
class=SpellE>b&#7873;n</span> <span class=SpellE>dây</span>).<o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l0 level1 lfo3;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><!--[if gte vml 1]><v:shape id="Picture_x0020_1"
 o:spid="_x0000_s1026" type="#_x0000_t75" alt="http://www.4so9.com/files/knots/noi-moc/buoc-day-doi.gif"
 style='position:absolute;left:0;text-align:left;margin-left:101.8pt;
 margin-top:0;width:153pt;height:300pt;z-index:251661312;visibility:visible;
 mso-wrap-style:square;mso-width-percent:0;mso-height-percent:0;
 mso-wrap-distance-left:2.25pt;mso-wrap-distance-top:2.25pt;
 mso-wrap-distance-right:2.25pt;mso-wrap-distance-bottom:2.25pt;
 mso-position-horizontal:right;mso-position-horizontal-relative:text;
 mso-position-vertical:absolute;mso-position-vertical-relative:line;
 mso-width-percent:0;mso-height-percent:0;mso-width-relative:page;
 mso-height-relative:page' o:allowoverlap="f">
 <v:imagedata src="./article/Bai2_files/image005.jpg" o:title="buoc-day-doi"/>
 <w:wrap type="square" anchory="line"/>
</v:shape><![endif]--><![if !vml]><img width=204 height=400
src="./article/Bai2_files/image006.jpg" align=right hspace=3 vspace=3
alt="http://www.4so9.com/files/knots/noi-moc/buoc-day-doi.gif" v:shapes="Picture_x0020_1"><![endif]><span
class=SpellE><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'>Ð&#7863;t</span></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#333333'> <span class=SpellE>n&#7857;m</span> 2 <span
class=SpellE>s&#7907;i</span> <span class=SpellE>dây</span> <span class=SpellE>ng&#432;&#7907;c</span>
<span class=SpellE>nhau</span> <span class=SpellE>và</span> <span class=SpellE>&#273;è</span>
<span class=SpellE>lên</span> <span class=SpellE>nhau</span> <span
class=SpellE>v&#7899;i</span> <span class=SpellE>kho&#7843;ng</span> <span
class=SpellE>cách</span> <span class=SpellE>ch&#7915;ng</span> 22cm<o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l0 level1 lfo3;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span class=SpellE><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'>Tóm</span></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'> <span class=SpellE>&#273;o&#7841;n</span>
<span class=SpellE>ch&#7891;ng</span> <span class=SpellE>lên</span> <span
class=SpellE>nhau</span> <span class=SpellE>nh&#432;</span> 1 <span
class=SpellE>s&#7907;i</span> <span class=SpellE>duy</span> <span class=SpellE>nh&#7845;t</span>
<span class=SpellE>và</span> <span class=SpellE>t&#7841;o</span> <span
class=SpellE>m&#7897;t</span> <span class=SpellE>nút</span> <span class=SpellE>xo&#7855;n</span>.
<span class=SpellE>S&#7907;i</span> <span class=SpellE>ng&#7855;n</span> <span
class=SpellE>h&#417;n</span> <span class=SpellE>nên</span> <span class=SpellE>&#273;&#432;&#7907;c</span>
<span class=SpellE>chuiqua</span> <span class=SpellE>hoàn</span> <span
class=SpellE>toàn</span> <span class=SpellE>nút</span> <span class=SpellE>xo&#7855;n</span>.<o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l0 level1 lfo3;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span class=SpellE><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'>Xo&#7855;n</span></span><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'> <span class=SpellE>nh&#432;</span> <span class=SpellE>v&#7853;y</span>
<span class=SpellE>vài</span> <span class=SpellE>ba</span> <span class=SpellE>l&#7847;n</span><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l0 level1 lfo3;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span class=SpellE><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'>Ð&#7847;u</span></span><span style='font-size:10.0pt;font-family:
"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";color:#333333'> <span
class=SpellE>dây</span> <span class=SpellE>còn</span> <span class=SpellE>l&#7841;i</span>
<span class=SpellE>bây</span> <span class=SpellE>gi&#7901;</span> <span
class=SpellE>c&#361;ng</span> <span class=SpellE>&#273;&#432;&#7907;c</span> <span
class=SpellE>&#273;&#432;a</span> qua <span class=SpellE>nút</span> <span
class=SpellE>xo&#7855;n</span> <span class=SpellE>m&#7897;t</span> <span
class=SpellE>l&#7847;n</span><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;line-height:normal;background:
#FAFAFA'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";color:#333333'><br style='mso-special-character:
line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p class=MsoNormal style='margin-top:0in;margin-right:30.0pt;margin-bottom:
0in;margin-left:30.0pt;margin-bottom:.0001pt;text-indent:-.25in;line-height:
14.65pt;mso-list:l0 level1 lfo3;tab-stops:list .5in;background:#FAFAFA'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
Arial;color:#333333'><span style='mso-list:Ignore'>5.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span class=SpellE><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'>Xi&#7871;t</span></span><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:"Times New Roman";
color:#333333'> <span class=SpellE>ch&#7863;t</span> <span class=SpellE>c&#7843;</span>
<span class=SpellE>hai</span> <span class=SpellE>s&#7907;i</span> <span
class=SpellE>dây</span><o:p></o:p></span></p>

<p class=MsoNormal align=center style='margin-bottom:12.0pt;text-align:center;
line-height:normal;background:#FAFAFA'><span class=SpellE><b><span
style='font-size:13.5pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#00309C'>Chúc</span></b></span><b><span
style='font-size:13.5pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#00309C'> <span class=SpellE>b&#7841;n</span> may <span
class=SpellE><span class=GramE>m&#7855;n</span></span><span class=GramE> !</span></span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
"Times New Roman";color:#333333'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>

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